Add feature: Disable single option within ng-select

I have an ng-select element where I would like to be able to disable the selection of a given option, whenever I want.

<ng-select [items]="comboboxElements"
           [bindValue]="comboboxElements['value']"
           dropdownPosition="bottom"
           virtualScroll="true"
           [ngModel]="active"
           (ngModelChange)="activeChange.emit($event)"
           (change)="onChange($event)">

    <ng-template ng-label-tmp
                 let-item="item">
        {{item.labelKey | translate}}
    </ng-template>

    <ng-template ng-option-tmp
                 let-item="item">
        {{ item.labelKey | translate }}
    </ng-template>
</ng-select>

I believe this feature would make sense to be available inside the ng-option-tmp, as so:

    <ng-template ng-option-tmp
                 [disabled]="item.disabled"
                 let-item="item">
        {{ item.labelKey | translate }}
    </ng-template>